This widely naturalized species was reported from Taiwan by Chaw and Peng (J. Taiwan Mus. 40(1): 71-83. 1987), who noted that it has been widely misidentified as "Borreria laevis," but that name applies to a distinct Asian species of restricted range. The seeds of this species were illustrated by Chaw and Sivarajan (Bot. Bull. Acad. Sin., n.s., 30: 20, f. 34-36. 1989, as Spermacoce assurgens).